2 Compresses and relaxes air-filled organs -Contuse or organs Abdominal injury is secondary concern during blast injury Injury to the Abdominal Wall (1 of 2) Skin and muscles transmit blunt trauma to internal structures -Typically only show (red skin) -Visible swelling and ecchymosis occur over several hours Penetrating trauma may appear minimal in comparison to internal trauma -Muscle may mask the size of the external wound - may be present Injury to the Abdominal Wall (2 of 2) Trauma to thorax, buttocks, flanks & back may penetrate abdomen -Lower chest may injure, liver, stomach or gallbladder tears -Herniation of abdominal contents into thorax Injury to the Hollow Organs (1 of 2) May rupture with compression from blunt forces May tear due to penetrating trauma Spillage of contents into Retroperitoneal space (behind abdominal cavity) - space (abdominal cavity) - space Intestines have a large amount of bacteria -Leakage can result in Injury to the Hollow Organs (2 of 2) Manifestations of Blood Loss - : Blood in stool - : Blood in emesis - : Blood in the urine Injury to the Solid Organs (1 of 2) Dense and less strongly held together Prone to -Bleeding - (rupture) Unrestricted hemorrhage if organ capsule is ruptured Injury to the Solid Organs (2 of 2) Pain patterns of specific organs: : pain referred to left shoulder : pain radiate to back : pain radiate from flank to groin & hematuria : pain referred to the right shoulder Injury to the Vascular Structures 2

3 Abdominal & Vena Cava -Prone to direct blunt or penetrating trauma -May be injured in injuries Blood accumulates beneath diaphragm -Irritation of muscular structures -Produces referred pain in the region -Greater volume of blood can be lost -Presence of blood in abdomen, stimulates vagus nerve resulting in of heart rate Blood can isolate in any of the abdominal spaces Injury to the Mesentery and Bowel : double fold of tissue in the peritoneum that supports the major portion of the small bowel, suspending it from the posterior abdominal wall Provides bowel with circulation and attachment Blood loss Tear of mesentery may rupture bowel Penetrating trauma to the lateral abdomen likely to injure bowel Injury to the Peritoneum (1 of 2) Delicate & sensitive lining of anterior abdomen : inflammation of the peritoneum due to: - irritation: due to torn bowel or open wound - irritation -Caustic nature of digestive enzymes -Urine initiates inflammatory response Injury to the Peritoneum (2 of 2) does not induce peritonitis Progression -Slight at location of injury - tenderness -Guarding -, board-like feel Injury to the Pelvis Serious skeletal injury Life threatening hemorrhage Potential injury to pelvic organs Bladder Female Genitalia Rectum Anus Injury During Pregnancy (1 of 4) Trauma is the number one killer of pregnant females 3

4 Penetrating abdominal trauma accounts for 36% of maternal mortality - account for 40-70% of penetrating trauma -Blunt trauma due to improperly worn seatbelts -Auto collisions are leading cause of mortality Changing dimensions of uterus - abdominal organs -Endangers & fetus Changing Dimensions of the Pregnant Uterus Injury During Pregnancy (2 of 4) Maternal Changes: Increasing size & weight of uterus Compression of vena cava Reduced venous return to heart Uterus is thick and muscular -Distributes forces of trauma to fetus - chances for injury Injury During Pregnancy (3 of 4) Maternal Changes: Increasing maternal blood volume -Protect mother from - - % of blood less necessary before signs of shock Risk of uterine & fetal injury increases with the length of gestation -Greatest risk during Trimester Injury During Pregnancy (4 of 4) Penetrating trauma may cause fetal and maternal blood Blunt trauma complications - rupture - placentae -Premature rupture of sac Injury to Pediatric Patients Children have poorly developed musculature & smaller diameter Rib cage has more cartilage -Transmits injury to organs beneath easier Increased incidence of injury to the liver, kidneys, and spleen Shock - well for blood loss -May not show signs and symptoms until % of blood is lost Evaluation of MOI (1 of 4) Must evaluate to assess seriousness of injury Identify strength and direction of forces - of impact -Focus observations and on that site 4

8 Organs by Abdominal Quadrant U p p e r L o w e r Liver, Gallbladder, Stomach (Small Part) Small and Large Intestine Head of Pancreas Upper Part of Kidney Small and Large Intestine Lower part of Kidney Half of Bladder, Appendix, Female Reproductive Organs Right Stomach, Tail of Pancreas Tail of Liver Small and Large Intestine Upper Part of Kidney Small and Large Intestine Lower part of Kidney Half of Bladder, Female Reproductive Organs Left

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